test: add WASI test for path_link()

PR-URL: #32132
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>

test/wasi/c/link.c

@@ -0,0 +1,17 @@
+#include <assert.h>
+#include <unistd.h>
+#include <sys/stat.h>
+
+#define OLD "/sandbox/input.txt"
+#define NEW "/tmp/output.txt"
+
+int main() {
+  struct stat st_old;
+  struct stat st_new;
+
+  assert(0 == stat(OLD, &st_old));
+  assert(0 == link(OLD, NEW));
+  assert(0 == stat(NEW, &st_new));
+  assert(st_old.st_ino == st_new.st_ino);
+  return 0;
+}

test/wasi/test-wasi.js

@@ -64,6 +64,7 @@ if (process.argv[2] === 'wasi-child') {
   runWASI({ test: 'getentropy' });
   runWASI({ test: 'getrusage' });
   runWASI({ test: 'gettimeofday' });
+  runWASI({ test: 'link' });
   runWASI({ test: 'main_args' });
   runWASI({ test: 'notdir' });
   // runWASI({ test: 'poll' });